Juice extractor



June 20, 1950 H. c. JOHNSON 2,511,934

JUICE EXTRACTOR Filed Nov. 24, 1944 2 Sheets-Sheet l June 20, 1950 H. c. JOHNSON 2,511,984

JUICE EXTRACTOR Filed NOV. 24, 1944 2 Shets-Sheet 2' [zzz/emr' @eige/ Johnson '/qorngs."

Patented June 20, 1950 PATEN T oFFlcE JUICE EXTRACTOR l Herbert C. Johnson, Wilmotto, n1.

2 Claims.

"The'finvention relates generally to juice extractors and more particularly to the type espe- Aopiioation November 24, 1944,'soria1 No. 564,946

(Cl. o-42) clallyl suited for use in extracting the juice of citrus fruits.

`The general object of the invention is to provide'a juice extractor of the foregoing type having an improved squeeze element so constructed that, in squeezing a half fruit, the pulp is prevented from being forced out of the squeezing area and is retained therein so that it is subjected to pressure to express the juice therefrom.

'Another object is to providean extractor of the foregoing type having a novel squeeze element so constructed that the pulp is retained within the squeezing area and the juice resulting therefrom is permitted to drain directly from the point of pressure through a'rnultitude of drain holes provided adjacent the pulp retaining means.

A further object is to provide an extractor of the foregoing type having a novel squeeze element provided with ridges extending transverse y the juice contained in this pulpis composed of cells containing the greater part of the juice of the fruit. Moreover, the juice that is released from the fruit has a tendency to run into the fringe of pulp and be absorbed thereby rather than to drain off.

While in some extractors heretofore made,

means have been pro-vided to prevent the formation of the fringe of pulp and to retain it Within the squeezing area, the juice in the pulp cells is obtained solely by causing the cells to burst under the pressure. Such mode of releasing the juice from the cells is obviously inefficient. Moreover, even though the pulp is retained within the squeezing area, the juice is drained only down the outer surface of the lower squeeze element so that any juice remaining within the squeezing area at the time pressure was released was reabsorbed by the pulp. Thus, with extractors of this type, the maximum amount of juice from the fruit could not be obtained.

:In the lpresent extractor, the lower squeeze element is so constructed that the pulp is retained fil ment providedwith pulp retaining means and drains; adjacent thereto which are so positioned as to readily drain the juice from the pulp without `becoming clogged by the latter.

'Other objects and advantages will become apparent from the following description taken in connection with the accompanying drawings, in which:A

Figure 1 is an elevational view showing a juice extractor in dotted lines with-the squeeze elewithin the squeezing area throughout the operation and the juice is drained oif as soon as released so that very little of it, if any, will be reabsorbed by the pulp when the pressure is released.

Moreover, the squeeze element is so constructedy as to `cut into the pulp cells to release the juice therefrom, rather than to burst them by pressure.

A maximum number of cells. are, therefore, ruptured without an excess of pressure so that the tractor of a character adapted to utilize a squeeze elementI embodying the features of the invention.

.. Thus, the extractor comprises a base It adapted insection, of the lower squeeze element shown in Fig. 1.

'-'Juice extractors of a character adapted for domestic use, particularly the type for squeezing tendency to force the pulp from the fruit downwardlybeyond the lower edge of the rind, creating a fringe of pulp extending Afrom the rind;

Because of the thickness of the rind and its ability to hold the squeezing elements slightly separated, the. pulp constituting such a fringe is not subjected to" any material pressure. Consequently,

to'support a glass or other container to receive the juice. Extending upwardly from the base is an upright H having a bracket portion l2 provided with a drain spout i3 and adapted to supporta lower squeeze element, indicated generally at I ll.v Mounted within the upright El is mechanisrn (not shown) adapted to be operated by a hand lever lffor vertically moving a head I6' having secured thereto an upper squeeze ele-v ment, indicated generally at l'l.

By turning the hand lever I5, the head I8 may and the half vfruit is squeezed between the two squeeze elements ||4 and Il, the juice draining downwardly in the bracket portion l2 and through the "drainv spout I3 into the container mounted on the base il). f The lower squeeze element I4 is constructed to pulp is lost since the 3 embody the features of the invention and is of generally truncated conical form having a conical side wall 20, a top wall 2l and an annular flange 22 at its bottom. The ange 22. may be provided with a plurality of peripheral notches 23 to permit the flange to pass below lugs 24 formed in the bracket portion of the extractor, the squeeze ele-1V formed integrally with the conical wall, concen-y trically therewith and projecting outwardly. The ridges 30 are located on the conical surf-ace in such position as to engage the'fruit from the lower edge of. the rind upwardly and into the body of the fruit asubstantialv distance to prevent thepulpl of the fruit from being forced downwardly beyond the edge of the rind. Thus, the pulp will beretained within the squeezing area so that the cells of which the pulp iscomposed will be fully subjected to the squeezing pressure.

The ridges 30 perf-crm the further function of.

being shaped to cause rupture ofv the pulp cells to release the juice therefrom. Thus, each ridge isprovided with a sharp corner 3| adapted to cut into the pulpv cells so that excessive pressure does not. have to be utilized to cause the rupture therel of. By being able to rupture they cells without excessive pressure, the juice is releasedtherefrom and a minimum amount of bitter oil from the rind is released.

In the preferred form of squeezingy element shown. in Figs. 1, 2 and 3, the sharp corner 3| on each ridge is formed by a surface 32 extending perpendicularly to the conical surface 20 and. a surface 33 extending parallel thereto. The rear or lower edge of each ridge 30 is provided by =a surface 34 preferably extending parallel to the axis of the squeeze element andy spaced a substantial distance from the next ridge below it.

The squeeze element is Ialso provided with. means for draining the juice away from the pulp as soon as it is released from the cells thereof so that the juice will not be reabsorbedby the mass of pulp when the pressure is released. To this end, I provide `a. plurality of annular rows of drain holes 35 positioned in the spaces between the ridges 3B so that there is a row of holes immediately adjacent the sharp corners 3| whichr cut the pulp cells and release the juice therefrom. The upper surface 32 of each ridge, since it is perpendicular to the conical surface, thus constitutes a ledge acting to drain the juice toward the drain holes so thatthe juice is immediately removed, upon release, from the squeezingarea and no large amount of juice Wil-l thereby be retained within the squeezing area to be reabsorbed by the pulp when the pressure is ref leased. The position of the drain holes 35 in the conical surface of the squeeze element issuchthat while they provide for free draining of theV juice released, there is no great tendency for the pulp to clog them since the pulp is forced out-- wardlyand held against the rind by the ridges-3U.

In the lower part of the squeeze element, I provide further drain :apertures 36 of upwardly elongated form and located at the point where the conicalsurface. 20 meets.thefflange.22.` rl'lhus, any

4 juice running down the conical surface 20 below the ribs 30 will be drained off. However, by so locating the apertures 36, the ange 22 remains integral to provide the desired strength.

From the foregoing, it will be apparent that with the squeeze element shown herein, the pulp ise prevented from being forced out of the squeezing area and is retained in such area so that the juice may be obtained therefrom. By retaining thepulpin the pressure or squeezing area, it may subjected to the cutting action of the sharp corners of the ridges so that the juice in the pulp cellsis readily released without an axcess of pressure. By thus holding the pressure at 9, minimnm,a minimum quantity of bitter oils fromtlre rindA is released. The rows of drain holes being.

interspersed between the ridges carry off the juico* so released from the pulp cells and prevent it from being reabsorbed bythe pulp when the pressure is:

released. Thus, with a squeeze element of the! character herein disclosed, a maximum amount o'fl juice from the fruit is obtained with a relatively' small pressure.

I claim:

1. A squeeze member for an extractor otthd character described comprising a conical'element having a plurality of outwardly projecting an.-v

nular concentric ridges on its conical surface;

each. ridge being defined by the surface offrevolu-y tion of a line parallel to the line generating the? conical element, a line at right Iangles to the ilrst mentioned line, anda line parallel to the axis of rotation of said conical element, the space'between the ridges providing space for the pulpg.

and the sharp annular edge deilned by the surface of revolution of said first and third men-- tioned lines being adapted to cut into the pulp@ cells and release juice therefrom, and there be ing drain openings closely adjacent the surfacesdefined by the surface of revolution of said first' and second mentioned lines to drain off the juiceso released.

2. Ay squeeze member for an extractor of the' character described comprising .a conical element having a plurality of concentric rows of drain openings through the conical surface of said ele# ment, and a plurality of outwardly projectingA annular concentric ridges between said rows, each ridge having an upper, concidal surface slanting;l

downwardly toward the adjacent row of drain openings to direct-the juice thereto, an outer sure` REFERENCES CITED The following' references are of record iritle' fil'e of this. patent:

UNITED sTATEs PATENTS Number Name Date' 1,850,001 DAnnunzio et al. Mar. 15, rasa-l` 1,958,570 Flegel g Mayl, 193?? 2,142,975 Majewski, Jr Jan; 3,- 193gi 2,245,726 Seyfred June 17, 194113 2,306,884- J akovicz Dec; 29,1942 2,220,372 Johnson \Nov. 5, 19401l 2,018,932 Thorne... l .n Cota-29; 1'935 

